Horseshoe puzzle



FIG. 1 is a perspective view of a horseshoe puzzle showing my new design;

FIG. 2 is a top plan view, the bottom side being substantially identical;

FIG. 3 is a side elevation view, the opposite side being substantially identical thereto; and

FIG. 4 is an end elevational view, the opposite end being substantially identical thereto. 

The ornamental design for a horseshoe puzzle, as shown and described. 